Winding machine



E. J. ABBOTT WINDING MACHINE Sept. 4, 1951 Filed May 5, 1950 4 Sheets-Sheet 1 Sept. 4, 1951 E. J. ABBOTT 2,566,299

WINDING MACHINE Filed May 5, 1950 4 Sheets-Sheet 2 g 12m 1? if I? J! J6 O O .74 F3 W 74 Pf y;

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I P I 1951 E. J. ABBOTT 2,566,299

WINDING MACHINE Filed May 5, 1950 4 She'ts-Sheet s ,/j. 7 Q Q a jrwervfar I I I l 5%0W%&645fraasedl wys.

E. J. ABBOTT WINDING MACHINE Sept. 4, 1951 4 Sheets-Sheet 4 Filed May 5, 1950 JZJUWJM0fidqcemed W 6W ww 5' Patented Sept. 4, 1951 UNITED STATES PATENT OFFICE Edward J. Abbott, deceased, late of Wilton,.N. IL, by Samuel L. Abbott, executor, WiltomN. 1L, assignor, by mesne assignments, to Abbott Worsted Mills, Incorporated, Wilton, N. 11., a corporation of New Hampshire Application May a, 1950, SerialNo. 159,112.

14 Claims. (01. 242-312 This invention relates to winding machines and more particularly to winding machines in which a thread guide has a progressive advance, lengthwise of the windmg bobbin, so that the zone. of traverse is progressively advanced lengthwise, producing the typical filling wind.

United States letters Patent No. 2,377,367, dated July '5. 1945., and No. 2,426,167,. dated August 26, A947,. disclose winding machines in which a thread guide assembly is provided with a packageieeler engageable: with the thread. on the winding bobbin. and movable by such engagement into engagement with an element which operates as a profile element, to control the progression of the thread guide assembly in accordance with the wound body of thread on the bobbin attaining a desired diameter. In the mechanisms specifically shown in the aforesaid patents, the profile element which is engaged in this manner is formed as a rack shaped 'to determine a tapered base portion, followed by a cylindrical main body portion, of the winding package.

Growth of thefbo'dy of wound thread on the bobbin to the predetermined desired diameter,

bin su'fficiently far to engage the profile element and cause the necessary slight advance of the thread guide in its progressive movement.

In 'windmg the typical filling wound bobbin in which the wound body of thread is formed with a harp ered base, the package'ieeler must be can able of inward movement, toward the axis of the bobbin, into or' approximately in-to actual contact with the bare bobbin so as to be capable of feeling a relatively small-diameter accumulati'on of thread during winding of the tapered base 7 portion.

Subsequently, in winding the iull diameter cylindrical or straight-sided portion of the bobbin, the feeler must make contact with the growing surface oithe bobbin at or very near the full diameter portion thereof, and by this engagement be'moved into contact with the profile element or rack, to cause progression.

The feelers shown in'the aforesaid'patents thus are called on to 'engage the rack when contacting with thread very'inear to the surface ofthe bare bobbin while the initial layers of the tapered base portion of the package are being wound, and are also called upon to engage the rack when contacting with thread at apprbi'ii mately the full diameter of the package while" the cylindrical or straight-sided portion of the package is being wound; Accordingly feelers "of this typehave been arrangeu'ror yielding move ment, against a restoring element such a spring, from very close proximity to the bare bobbin outwardly into engagement with the rack at each reciprocating stroke of "the-thread guide;

even during "winding the main full-diameter body portion or thread. l l itnow appears that during winding of th ent invention. who present invention reduces the length oimovement of the teeler and thereby reduces the wear .between the feeler and its guides and improves theismoothness of. operation of the device.

It now further appearsothat during the windingot theifiull. diameter portion it is possible and desirable to prevent the feeler from .moving; inwardly to or approximately to the bare. bobbin,

and to prevent the .-fee1er,irom engaging the more centrally located portions of the growing,

conical nose of the thread package upon the bobbin. It will be understood, that the-growing conical .nose of the thread package is not entirely smooth, and that the bobbin at times may be.

somewhat warped and runiout of true, so that in moving outwardly in contact with the growing conical nose,-a teeler may tend to bounce outwardly away from the bobbimand thus .prematurely engage the: profile element, causing premature or excessive progression of the thread guide and accordingly a groove or vacant space in the surface of the woundyar-n; on the bobbin.

In the devices of the aforesaid patents it is possible to reduce such bouncing tende-ncyby increasing the force of the spring that urges the feeler inwardly toward the bobbin Howeven.,;

mately into, contact with the bare bobbin for winding of the initial layers, but provides that in winding the full diameter portion of the bobbin the feeler shall not approach so closely to the bare portion of the bobbin but shall operate with a relatively short in and out movement and engage only with the outermost portion of the growing conical nose of the thread mass. Excess in and out movement of the feeler and unnecessary extent of area of contact of the feeler and the growing conical nose of thethread mass are both avoided, producing'a smoother operating and longer wearing mechanism and less contact with the thread.

While the profile element is shown in the present application as formed in the simplest manner as a fixed rack adapted to react directly upon the thread guide assembly by engagement of a tooth of the rack with the feeler, and s progressively advance the thread guide assembly along a traverse rod, other more complicated provisions for advancing the thread guide assembly may be used. In any case the function of the profile element is, ,as will be obvious, to establish the shape of thepackage being wound, and to condition the progressive advance of the thread guide upon attainment of the desired diameter by the wound body of thread.

In the preferred construction illustrated in which the profile element is in the form of a toothed rack, it is particularly advantageous to provide, as hereinafter explained, for shifting the feeler to a position in which it will not be caught and detained by the inclined portion of such rack located adjacent to the base of the bobbin during return movement of the thread guide assembly toward the base or starting position.

Other objects of the invention and advantageous features will be apparent from this specification and its drawings in which the invention is explained by way of example.

In the accompanying drawings:

Fig. 1 is a plan view, with certain parts broken away and certain parts omitted, of a traveling spindlefilling winding unit of the general type disclosed in the aforesaid patents, but having the present improvement applied thereto;

Fig. 2 is a fragmentary plan view of the thread guide assembly of Fig. 1;

-Fig. 3 is a vertical sectional view on the line 33 of Fig. 1 with the feeler element engaged with the surface of the winding thread mass on the bobbin;

'Fig. 4 is a view similar to Fig. 3 showing the feeler element free from the surface of the thread mass;

Fig. 5 is an elevation of the thread guide assembly as viewed from the left of Fig. 3;

Fig. 6 is a fragmentary plan view with parts of the winding unit broken away showing the winding unit engaged by the winding unit tending mechanism and showing the thread guide assembly as being moved to the right following discharge of the fully wound bobbin from the winding position; I

Fig. 7 is a view similar to Fig. 6 showing the thread guide assembly as moved to its extreme right-hand position;

Fig. 8 is a view similar to Figs. 6 and 7,:but on a larger scale, showing the thread guide assembly in two positions, first, in the course of movement to the left following the position of Fig. 7., and second, in its extreme left-hand position; and

Fig. 9 is a view similar to Fig. 8 showing the 4 winding unit as winding the tapered base portion of thread upon a new bobbin.

Although the invention is of general applicability to winding machines in which the thread guide has a progressive movement along the length of the winding package, the invention is herein shown as applied to a winding machine of this type in which a plurality of winding units travel in a closed path during the winding, as in the aforesaid Letters Patent. Thus the machine includes a plurality of winding units, indicated at I, which are moved by a chain 4 in a closed path about the machine upon a track consisting of upper and lower rails, a portion of the upper railz being shown in the drawings.

A winding bobbin B is received between an inner hollow driving head or center or chuck 3U, driven by an individual-electric motor 6!], and an outer retractable center or chuck 3i.

A traverse cam driven through worm gearing'by the motor 60 rapidly reciprocates round traverse rod 29, constituting the driver for the thread guide, the stroke of reciprocation of the rod 20 being relatively short and only a fraction of the length of the yarn package to be wound on the bobbin B.

The thread guide assembly 9 which is frictionally connected to the reciprocating traverse rod 20 is shown as including an upper plate BI and a lower plate 62 connected by vertical end pieces 63, 64 of fiber-composition material which frictionally engage the reciprocating traverse rod 20. The thread guide assembly also includes a tubular element 65 of fiber-composition material wrapped around the traverse rod 23 and compressively held in frictional engagement therewith by an inwardly pressing springbjacket '66.

Thread T runs from the thread supply up through an outer eye 67 in the uppe'r plate 6|} thence over the plate 6| through an inner eye 68 and thence down through'the eye 68 onto the winding bobbin.

A rearwardly'extending portion ofthe upper plate 6| carries a guide block 10 which is slidable beneath a guide bar 12, preventing the thread guide assembly from rotating around the reciprocating traverse rod 20.

The lower plate 62 is provided with downturned portions (-32 and 62'? which ar recessed to receive a slidable feeler indicated generally at 72. As in Patent No. 2,426,167 the feeler is yieldingly urged to the right and its inner end is adapted to engage the wound thread on the bobbin as the thread guide assembly moves toward the base end of the bobbin, the feeler being slidable by this contact so as to bring the outer or left end of the feeler in Fig. 3 intocontact with one of the teethof a fixed rack or ratchet bar 18 serving as a profile element. This engagement detains the thread guide against movement toward the base of the winding-bobbin, allowing the traverse rod 20 to shift slightly relative to the thread guide assembly, producing th desired progressive advance of the thread guide assembly relative to the traverse rod and toward the tip end tapered base end of the thread package, and

thereafter continues parallel or approximately area-sec S parailel to the axis throughout the main portion of the rack, corresponding to the main cylindrical body portion of the thread package.

-In the early stages of windingof thetapered base portion of the package the feelermustfeel the wound thread at a point which is necessarily close to the bare bobbin, as shown in Fig. 9, and be moved by this contact with the thread into contact with the rack. However in winding the full-diameter portion-of the package the feeler should detect the presence of wound thread at a considerably larger distance from the axis, that is, at or very near to the full diameter of the forming cylindrical main body portion of the package, as in Fig. 1, and here again be moved into contact with the rack.

Instead of being moved inwardly approximately to the bare bobbin, regardless of theintended diameter of the part of the package being wound, as in constructions having thread guide mechanisms similar to those of the aforesaid patents, the f'eeler of the present invention is moved hard- 1y any closer to the axis of the bobbin than is required to disengage its outer end from the rack 18. Fig. 3 shows the feeler l5 moved by the thread into engagement with the rack 18 as the thread guide assembly moves in its short stroke toward the base end of the bobbin. In Fig. 4, which represents the same stage of winding, but with the thread guide assembly moved toward the tip end of the bobbin, and the feeler free from the surface of thewound thread, the feeler is only slightly nearer to the axis of winding than in Fig. 3. Theiull line position of the ieeler '15 in Fig. 1 represents the left end of the short stroke of the thread guide assembly toward the base of the bobbin, and the broken line position of the feeler in Fig. 1 represents the right end of the short stroke of the thread guide assembly toward the tip of the bobbin and corresponding to Fig. 4.

Thus as the ieeler is moved to greater distances from the axis of the bobbin, as in being moved outwardly in conformity to progression along the tapered base portion of the package, the point of nearest approach of the feeler is allowed to withdraw relative to the axis of the bobbin.

The preferred illustrated construction includes a displaceable connection between the feeler and a ieeler-restoring member permitting the feeler to be displaced relatively to the feeler-restoring member upon increase in outward extent of movement of the feeler away from the axis of the bobbin. In Figs. 3, 4 and 5 a feeler-restoring member is shown as comprising a slotted cylindrical body Bil of fiber-composition material frictionally engaging the feeler I5 and compressively held in frictional engagement with the feeler 15 by an inwardly pressing spring jacket 9|. The feeler-restoring member, as shown in Figs. 3 and 4 is slightly shorter than the distance between the downturned portions [52 and 62 between which it moves, so as to have only a short movement between these portions, and is continually urged toward the axis of the bobbin and away from the rack by a spring 95. The outer end of the spring 95 is secured to the thread guide assembly, for instance to the outer downturned flange 62 and the inner end of the spring extends into and is feeler toward the axis of the bobbin. The triotiona li connection between the ieeler and the feeler-restoring member permits displacement of the feeler relatively to this zone of action, while composition material 90 and spring jacket 81- is preferred because of the proven ability of similar elements 65 and 66 to give long service connecting the thread guide assembly to the traverse rod 20.

. Upon completion of the winding, the ieeler will occupy a position similar tothat shown in Fig. 4, relatively close to the portion of the rack 18 which corresponds to the full-diameter c'yi' drical portions of the bobbin, or perhaps even in contact with the rack as in Fig. 3 in case' the short stroke of the thread guide assembly happens to stop at its end toward the base of the bobbin. In this latter case, the 'f-eeler will resume the position of Fig. 4" after the wound bobbin has been dropped out from between the centers or chucks tfl and 3|.

Figs. 6, '7 and 8 show the winding unit after completion of the bobbin and after the outer center or chuck 3| has been retracted by engagesecured to the cylindrical member 90, urging it and the feeler toward the axis of the bobbin.

Thus the feeler-restoring member has a limited zone of action, in between the two downturned flanges 62 and 62 in which it exerts a restoring action upon the feeler tending to restore the ward the chuck 3|.

ment of a chuck-retracting crank arm 34 with stationary cam 36, the wound bobbin, now be low the levelof the chucks30 and 3| being omitted for clarity of illustration.

20, in a direction oppositeto its progressive movement to a position near the base chuck 30 in connection with positioning the thread across this base chuck, for clamping of the thread between this chuck and the base of a new bobbin. With its feeler in a position such as shown in Fig. 4 the thread guide assembly could be shifted backwardly along themain portion of the rack 18 but the outer end of feeler '15 would catch upon the inwardly tapered portion 18 of the rack. The feeler could be prevented from colliding with the teeth of the tapered portion 18*- of the rack upon this backward or return movement of the thread guide assembly toward the base chuck by employing the construction shown in Fig. 11 of Patent No. 2,426,167 to displace the rack, or at least the portion l8 thereof, out of the path of the feeler. However, the construction can be materially simplified and made more reliable by leaving the rack in a fixed position and shifting the feeler out of the way of the rack, as will now be explained, preparatory to returning the thread guide assembly toward the base chuck.

Shortly after the outer chuck 3| has been retracted and the bobbin dropped, an upstand= ing roller 8| on the thread guide assembly is engaged by an overheadstationary cam I20 (Fig. 6') which has the effect of moving the thread guide assembly, including the feeler, to the right, 'to-, The outer or rack-engaging end of the feeler during this movement engages a cam surface 91, shifting the feeler inwardly toward the now vacant axis between the chucks 30 and 3|, as shown by comparison of Figs. 6 and '7. So moved, the feeler is now in position to clear thetceth of the tapered portion 18* of the rack as the thread guide assembly is shifted toward the base chuck by a second stationary overhead cam 3H1. In the right-hand bzroken F line position of the feeler 15 in Fig. 8, the thread guide assembly of which it forms a part is in the act of being shifted by cam 3H] toward the base chuck. In the left-hand full-line position of the feeler in Fig. 8, the thread guide assembly is, located adjacent to the base chuck 30 with the thread from the inner eye 68 to the discharged full bobbin (not shown) extending across the base chuck in preparation for reception of a new bobbin between the chucks. l

The shift of the feeler toward the axis of winding, by cam surface 91, in addition to permitting the feeler to clear the teeth of tapered rack portion 18 also positions the inner end of the feeler relatively near to the axis of winding suitably for engagement of the feeler with the initial layersof thread at the beginning of winding on the base portion of the next bobbin.

,What is claimed is: 1'. A filling winding machine thread guide mechanism including a thread guide having a short quick stroke of traverse and a progressive advance along a rotating winding bobbin, a feeler mounted to travel with the thread guide in its short quick stroke and progressive advance and mounted for movement away from the axis of the bobbin by contact with the wound thread on the bobbin, a profile element cooperating with the feeler to control the progressive advance of the thread guide, a feeler-restoring member for restoring the feeler toward the axis of the bobbin, and a displaceable connection between the feeler and feeler-restoring member permitting withdrawal, away from the axis of the bobbin, of the point of nearest approach of the feeler, as the 'feeler is moved to greater distances from the axis of the bobbin by contact with the wound thread.

2. A filling winding machine thread guide mechanism including a thread guide having a short quick stroke of traverse and a progressive advance along a rotating winding bobbin, a feeler mounted to travel with the thread guide in its short quick stroke and progressive advance and mounted for movement away from the axis of the bobbin by contact with the wound thread on the bobbin, a profile element cooperating with the feeler to control the progressive advance of the thread guide, a spring for restoring the feeler toward the axis of the bobbin, and a displaceable connection between the feeler and spring permitting withdrawal, away from the axis of the bobbin, of the point of nearest approach of the feeler, as the feeler is moved to greater distances from the axis of the bobbin by contact with the wound thread.

3. A filling winding machine thread guide mechanism including a thread guide having a short quick stroke of traverse and a progressive advance along a rotating winding bobbin, a feeler mounted to travel with the thread guide in its short quick stroke and progressive advance and mounted for movement away from the axis of the bobbin by contact with the wound thread on the bobbin, a profile element cooperating with the feeler to control the progressive advance of the thread guide, a feeler-restoring member for restoring the feeler toward the axis of the bobbin, and a displaceable connection between the feeler and feeler-restoring member, said displaceable connection permitting the feeler to be displaced relatively to the feeler-restoring member upon increase in outward extent of movement of the feeler away from the axis of the bobbin.

4. A filling winding machine thread guide mechanism including a thread guide having a short quick stroke of traverse and a progressive advance along a rotating winding bobbin, a feeler mounted to travel with the thread guide in its short quick stroke and progressive advance andmounted for movement away from the axis of the bobbin by contact with the wound thread on the bobbin, a profile element cooperating with the feeler to control the progressive advance of the thread guide, a feeler-restoring member having a limited zone of action within which it exerts a restoring action on the feeler tending to restore the feeler toward the axis of the bobbin, and a connection between the feeler and feeler-restoring member permitting displacement of the feeler relatively to the zone of action of the feeler-re: storing member while maintaining the feeler under the influence of the feeler-restoring mem-, her.

5. A filling winding machine thread guide mechanism including a thread guide having a short quick stroke of traverse and a progressive advance along a rotating winding bobbin, a feeler mounted to travel with the thread guide in its short quick stroke and progressive advance and mounted for movement away from the axis of the bobbin by contact with the wound thread on the the feeler-restoring member while maintaining the feeler under the influence of the feeler-restoring member.

6. A filling winding machine thread guide mechanism including a thread guide having a short quick stroke of traverse and a progressive advance along a rotating winding bobbin, a feeler mounted to travel with the thread guide in its short quick stroke and progressive advance and mounted for movement away from the axis of the bobbin by contact with the wound thread on the bobbin, 2. profile element shaped for engagement by the feeler at increasing distances of the feeler from the axis of the bobbin as a tapered base portion of thread is wound on the bobbin, a feeler-restoring member for restoring the feeler toward the axis of the bobbin, and a connection between the feeler and feeler-restoring member permitting approximately constant length of return movement of the feeler by the feeler-restoring member notwithstanding increasing distances of the feeler from the axis of the bobbin.

7. A filling winding machine thread guide mechanism includin a thread guide having a short quick stroke of traverse and a progressive advance along a rotating winding bobbin, a feeler mounted to travel with the thread guide in its short quick stroke and progressive advance and mounted for movement away from the axis of the bobbin by contact with the wound thread on the bobbin, a profile element cooperating with the feeler to control the progressive advance of the thread guide, the portion of the profile element which determines the shape of the base portion of thread wound on the bobbin being tapered to eifect a taper of such base portion, a feeler-restoring member for restoring the feeler toward the axis of the bobbin, and a displaceable connection between the feeler and feeler-restoring member permitting withdrawal, relative to the axis of the bobbin, of the point of nearest ap rprcach OfibhBtfBGIBLIQSTthG"feeler is progressively :movedaalong sthetapereid portionxoi the profile element. t a i i 8. a filling winding machine thread guide :Jnechanism including .a rthread :guidehaving a zmountedior movement away :from the axis of:

the bobbin by contact with the wound "thread on the bobbin, a profile element cooperating with the feeler to control:thesprogressive advance of the thread guide, the profile element being shaped to condition the advance of the thread guide upon increasingly greater outward movement of the feeler during winding of a tapered base portion of the bobbin and being shaped to provide an approximately cylindrical full-diameter main body portion of thread on the bobbin, a feeler-restoring member for restoring the feeler toward the axis of the bobbin, and a displaceable connection between the feeler and feeler-restoring member permitting withdrawal, relative to the axis of the bobbin, of the point of nearest approach of the feeler, as the feeler is moved to greater distances from the axis of the bobbin by contact with the wound thread.

9. A filling winding machine thread guide mechanism including a thread guide having a short quick stroke of traverse and a progressive advance along a rotating winding bobbin, a feeler mounted to travel with the thread guide in its short quick stroke and progressive advance and mounted for displacement outwardly from the axis of the bobbin by contact with the forming package of thread on the bobbin, a feeler-restoring member for restoring the feeler toward the axis of the bobbin, the feeler-restoring member having limited movement of materially less length than the displacement of the feeler outwardly from the axis of the bobbin, and a connection between the feeler and feeler-restoring member permitting outward shift of the feeler relative to the feeler-restoring member as the feeler progresses along a forming tapered base portion preceding the main body portion of the package, and inward shift of the feeler relative to the feeler-restoring member after winding such main body portion of the package.

10. A filling winding machine thread guide mechanism including a thread guide having a short quick stroke of traverse and a progressive advance along a rotating winding bobbin, a feeler mounted to travel with the thread guide in its short quick stroke and progressive advance and mounted for displacement outwardly from the axis of the bobbin b contact with the forming package of thread on the bobbin, a feeler-restoring member for restoring the feeler toward the axis of the bobbin, the feeler-restoring member having limited movement of materially less length than the displacement of the feeler outwardly from the axis of the bobbin, and a frictional connection between the feeler and feelerrestoring member permitting outward shift of the feeler relative to the feeler-restoring member as the feeler progresses along a forming tapered base portion preceding the main body portion of the package, and inward shift of the feeler relative to the feeler-restoring member after winding such main body portion of the package.

11. A filling winding machine thread guide mechanism including a thread guide having a short quick stroke of traverse and a progressive vadvanceialongsa rotating winding bobbin,- a feeler :mounted to trave'l-wit-h'the thread guide in its lShOIt quick stroke and progressive advance and mounted "for displacement outwardly :from .the .-:axis of the bobbin by contact withthe forming package of :thread 'onthe bobbin, at'feeler-restorring member rfort'restoring the feeler toward the axis of the bobbin, the feeler-restoring member shaving limited :movement of materially less ilength i than the displacement of the ,"feeler out- -wardly:from the :axisof \the'bobbin, a connection :between the feelerrand the feeler restoring member l permitting relative a shift :between the feeler and the feeler-restoring member, a profile element engageable with the feeler and shaped to permit outward shift of the feeler relative to the feeler-restoring member during a portion of the winding of the package, and mechanism for shifting the feeler inwardly relative to the feelerrestoring member following winding of the main body portion of the package.

12. A filling winding machine thread guide mechanism including a thread guide having a short quick stroke of traverse and a progressive advance along a rotating winding bobbin, a feeler mounted to travel with the thread guide in its short quick stroke and progressive advance and mounted for displacement outwardly from the axis of the bobbin by contact with the forming package of thread on the bobbin, a feelerrestoring member for restoring the feeler toward the axis of the bobbin, the feeler-restoring member having limited movement of materially less length than the displacement of the feeler outwardly from the axis of the bobbin, a connection between the feeler and the feeler-restoring member permitting relative shift between the feeler and the feeler-restoring member, a profile element engageable with the feeler and shaped to permit outward shift of the feeler relative to the feeler-restoring member during a portion of the winding of the package, and a cam cooperating with the feeler to shift the feeler inwardly relative to the feeler-restoring member following winding of the main body portion of the package.

13. An automatic filling winding machine including a thread guide having a short quick stroke of traverse and a progressive advance along a rotating winding bobbin, a feeler mounted to travel with the thread guide in its short, quick stroke and progressive advance and mounted for displacement outwardly from the axis of the bobbin by contact with the forming package of thread on the bobbin, a profile element including a tapered portion controlling outward displacement of the feeler during said progressive advance, a feeler-restoring member for restoring the feeler toward the axis of the bobbin, the feeler-restoring member having limited movement of materially less length than the displacement of the feeler outwardly from the axis of the bobbin, mechanism for causing a return movement of the thread guide and its feeler in the direction opposite to said progressive advance following winding of the package on the bobbin, and mechanism for shifting the feeler inwardly relatively to the feeler-restoring member to permit the feeler to clear the tapered portion of the profile element in said return movement of the thread guide and feeler.

14. An automatic filling winding machine including a thread guide having a short quick stroke of traverse and a progressive advance along a rotating winding bobbin, a feeler mounted to travel with the thread guide in its short quick stroke and progressive advance and mounted for displacement outwardly from the axis of the bobbin by contact with the forming package of thread on the bobbin, a profile element including a tapered portion controlling outward displacement of the feeler during said progressive advance, a feeler-restoring member for restoring the feeler toward the axis of the bobbin, the feeler-restoring member having limited movement of materially less length than the displacement of the feeler outwardly from the axis of the bobbin, mechanism for causing a return move-' ment of the thread guide and its feeler in the 5 storing member to permit the ieeler to clear the tapered portion of the profile element in said return movement of the thread guide and feeler.

SAMUEL L. ABBOTT,

. Executor of the Will of Edward .7. Abbott, De-

ceased.

No references cited. 

